Sound machine



FIG. 1 is a first perspective view of a sound machine showing the claimed new design;

FIG. 2 is a second perspective view of the sound machine;

FIG. 3 is a front elevation view of the sound machine;

FIG. 4 is a rear elevation view of the sound machine;

FIG. 5 is a left side elevation view of the sound machine;

FIG. 6 is a right side elevation view of the sound machine;

FIG. 7 is a top plan view of the sound machine; and,

FIG. 8 is a bottom plan view of the sound machine.

In the drawing, the claimed design is defined by the shaded surfaces; the broken lines depict unclaimed environment that forms no part of the claimed design. 

CLAIM The ornamental design for a sound machine, as shown and described. 